Record timeline scrubbing

ok long shot, but I am doing a music video for a friend right now, and i want to “scratch” video sync to the scratching (dj-scratching) on the track.

I know I can record a few pieces of me timeline scrubbing by looping it back into a second decklink card and edit them together, but maybe anyone knows if there is in fact a better way to go about it, I am open to any kind of software for this, basically record the “video scratching” as metadata. cheers

one option could be to draw a Motion Curve, and apply the X or Y data to a TW Timing channel

thank you, thats perfect!